National Diamond Laboratory
Manufacturers of Fine Diamond Tooling
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Related Information:
WHAT IS POLYCRYSTALLINE? | POLYCRYSTALLINE MAKES A POINT | PCD APPLICATIONS GUIDELINES | 
PCD OPERATING INSTRUCTIONS | PCD RECOMMENDED PARAMETERS | CBN SPECIFICATIONS AND APPLICATIONS 
CBN OPERATING INSTRUCTIONS  | CBN APPLICATIION CHART | CBN PARAMETERS FOR MACHINING 
PCD/CBN RECOMMENDED SPEEDS & FEEDS  

MATERIAL
SPEED
sfm
DEPTH OF CUT
inches
FEED RATE
ipr
SCEA*
degrees
HIGH TEMPERATURE ALLOYS
Inconel 600
Inconel 718
Rene 41
Rene 77
Rene 95 (Forged)
Incoloy 901
K-Monel
Stellite
Colmonoy
Waspoloy
Rene 95 (Hot ISO-Pressed)

600
600
600
500
450
800
600
600
600
600
900

.125
.125
.125
.015
.125
.125
.125
.125
.125
.060
.125

.006
.006
.006
.006
.005
.006
.006
.006
.003
.003
.006

15
45
45
71
45
45
15
15
15
45
45
HARDENED ALLOYS
Chilled Iron (60Rc)
Meehanite Iron (56Rc)
Moly-Chrome Steel Rolls (68Rc)
M-2 (62 Rc)
D-2 (58 Rc)
A-2, A-6 (58 Rc)
8620 (63 Rc)
D6AC (54 Rc)
52100 (60-62 Rc)

400
600
300
250
250
250
250
400
250

.200
.250
.125
.060
.060
.060
.060
.060
.060

.008
.008
.008
.005
.005
.005
.005
.006
.015

45
45
45
45
45
45
45
45
R**

NOTE: Machining materials with hardness below 45 HRc has often
proven to be technically but not economically successfull.

SCEA* = Side cutting edge angle (lead angle).
R** = Round insert was used

Recommended Rough Turning Parameters

Parameters for rough-turning selected materials with "PCD" tools are given in the accompanying table.  When taking finishing cuts, higher speeds and lower feeds than those given in the table are normally used.


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